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POM/Graphite and POM/MoS2 composites were prepared using twin screw extruder for 2 and 6% compositions of fillers. The samples for impact test were prepared by injection moulding machine. The samples were studied for impact strength and wear loss. The wear test of the samples was carried out using pin on disc wear testing machine at various loads. Impact test of the samples was carried out by impact testing machine. The wear of the POM/MoS2 composites decreased compared to POM/Graphite composites. The impact results revealed that significant improvement in the impact strength for graphite and MoS2 fillers compared to pure POM. The microstructural study was conducted for wear samples to know the wear behavior of POM composites.

Cryogenic treatment has a good potential to significantly increase the service life of automotive components, where friction and wear are the major factors in their operation leading to failure. Cryogenic treatment changes the surface as well as the core properties of the component in comparison with other treatments. It has significant improvement in wear and toughness. Numerous studies have been conducted on cryogenic treatment of steels and tool steels showing significant improvements in wear resistance, only minimal work has been done in cast irons. In this study, the effect of cryogenic treatment on the wear resistance, hardness, tensile strength, toughness and microstructure of spheroidal graphite iron was assessed. The deep cryogenic treatment was carried out at 87K for 12h and annealed in the chamber itself. The samples were tempered at 473K for 1 h.